Home / 826,620.90-1,239,931.35-354,228.90

Finding the Fourth Proportional to 826,620.90, 1,239,931.35 and 354,228.90

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Solution

The fourth proportional to 826,620.90, 1,239,931.35 and 354,228.90 is: 531,343.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    826,620.90 : 1,239,931.35 = 354,228.90 : x
  2. Step 2: Convert to fraction form
    826,620.90/1,239,931.35 = 354,228.90/x
  3. Step 3: Cross multiply
    826,620.90x = 1,239,931.35 × 354,228.90
  4. Step 4: Simplify right side
    826,620.90x = 439,219,518,186.02
  5. Step 5: Solve for x
    x = 439,219,518,186.02/826,620.90
  6. Step 6: Final answer
    x = 531,343.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.